DE102017103770A1 - Fastening device and mounting assembly - Google Patents

Abstract

In a fastening device (20) for clamping in a rail (18) by screwing about an axis of rotation (D) having a substantially C-shaped cross-section and a longitudinal slot (22) with opposite slot flanks (24), wherein the fastening device is a cover plate (28) whose length and / or width is greater than the width of the longitudinal slot (22) of the profile rail (18), a threaded plate (32) having a threaded bore (68) and a length greater than the width of the longitudinal slot (22 ) and a width smaller than the width of the longitudinal slot (22) has, and on the cover plate (28) arranged holding device (30) for the threaded plate (32) for insertion into the rail (18), wherein between the cover plate (28 ) and the threaded plate (32) with respect to the axis of rotation (D) diametrically opposed spring arrangements (56) for engagement with the slot flanks (24) of the longitudinal slot (22) are provided is provided in that the spring arrangements (56) each have two curved spring straps (58, 59) extending radially outwards from the holding device (30) with respect to the axis of rotation (D), which are opposite to the holding device (30) in opposite directions Furthermore, a fastening assembly (10) with such a fastening device and with a profiled rail (18) is provided, which has a substantially C-shaped cross-section and a longitudinal slot (22) with opposite slot flanks (24), wherein the length of the Threaded plate is greater than the width of the longitudinal slot (22) and the width of the threaded plate (32) is smaller than the width of the longitudinal slot (22).

Description

The invention relates to a fastening device for clamping in a rail by screwing in a rotation axis, which has a substantially C-shaped cross section and a longitudinal slot with opposite slot flanks, wherein the fastening device comprises a cover plate for resting on the rail by e.g. the length and / or width of the cover plate is greater than the width of the longitudinal slot of the rail, a threaded plate having a threaded bore and a length greater than the width of the longitudinal slot and a width smaller than the width of the longitudinal slot has, and one on the cover plate arranged holding device for the threaded plate for insertion into the rail, wherein between the cover plate and the threaded plate with respect to the axis of rotation diametrically opposite spring arrangements are provided for engagement with the slot flanks of the longitudinal slot. The invention further relates to a fastening assembly with such a fastening device and with a rail, which has a substantially C-shaped cross-section and a longitudinal slot with opposite slot flanks, wherein the length of the threaded plate in the direction of insertion is greater than the width of the longitudinal slot and the width of the Threaded plate transverse to the insertion direction is smaller than the width of the longitudinal slot.

Such fastening devices are for example in the EP 1 902 222 B1 and the DE 10 2007 014 795 A1 shown.

For attaching the load to the rail, such a fastening device is aligned with the threaded plate so that the longitudinal direction of the threaded plate substantially coincides with the longitudinal direction of the rail. Subsequently, the fastening device is inserted with the holding device and the threaded plate in the longitudinal slot until the cover plate rests on the outside of the rail.

Subsequently, the fastening device is rotated from this intermediate mounting position about an axis of rotation in a pre-assembly in which the threaded plate engages behind the slot flanks. Finally, the threaded plate is pulled into the final assembly position against the inner surface of the slot flanks, so that the slot flanks between the threaded plate and the cover plate and / or the attachment are clamped, whereby the attachment is fixed to the rail. The cover plate may serve as a weakly dimensioned only the task of provisionally jamming the fastening device to the rail, but it can also be transmitted as a correspondingly stable executed part directly the clamping forces in the final tightened state and then, for. lie between the rail and the attachment. If the cover plate is made of a plastic, it may be formed integrally with the holding cage. However, the cover plate and the holding cage can also be attached as two separately produced parts in a suitable manner to each other, and they may also consist of different materials. The fastening device thus makes it possible to insert the threaded plate in the rail and then rotate in the pre-assembly.

The holding device has play in the longitudinal slot, in particular in the pre-assembly position, so that the fastening device is not or not sufficiently held in the longitudinal slot and / or centered. In order to clamp the fastening device in the longitudinal slot of the rail and thus to reduce a game between the slot flanks and the fastening device, has in the EP 1 775 482 B1 shown fastening device below the cover plate on two opposite clamping elements. Upon rotation of the fastening device from the intermediate mounting position to the preassembly position, they come into contact with the slot flanks of the longitudinal slot and are prestressed, as a result of which the fastening device is jammed and / or centered in the longitudinal slot of the profile rail. By the clamping, for example, a pre-fixing in the longitudinal slot can be done as a displacement of the fastening device in the longitudinal direction of the longitudinal slot is only possible against a higher resistance by the clamping force.

The object of the invention is to provide a fastening device and a fastening assembly that allow improved grip and improved centering of the fastening device in the rail.

Main features of the invention are indicated in the characterizing parts of claims 1 and 10. Embodiments are the subject of claims 2 to 9 and 11th

To solve the problem is in a fastening device for clamping in a rail by screwing about an axis of rotation, which has a substantially C-shaped cross-section and a longitudinal slot, wherein the fastening device is a cover plate whose length and / or width is greater than the width of Longitudinal slot of the rail, a threaded plate having a threaded bore and has a length greater than the width of the longitudinal slot and a width smaller than the width of the longitudinal slot, and arranged on the cover plate holding device for the threaded plate for insertion into the rail, wherein between the cover plate and the threaded plate with respect to the axis of rotation provided diametrically opposite spring arrangements for abutment with the slot flanks of the longitudinal slot, provided that the spring assemblies each have two extending from the holding device with respect to the axis of rotation radially outwardly extending, curved spring tabs which extend in each case with respect to a circumferential direction around the holding device in opposite directions ,

The spring tabs are arranged so that upon rotation of the inserted with the holding device or the threaded plate in the longitudinal slot of the rail fastening device one or both spring tabs of the spring assemblies with the edges of the longitudinal slot in abutment and are biased. As a result, the fastening device is jammed in the longitudinal slot and is held without play on the rail. By the two spring tabs of a spring arrangement ensures that regardless of the direction of rotation at least one spring tab of a spring assembly when turning the fastening device with an edge comes into abutment and is biased. It is thus independent of the direction of rotation and the position of the fastening device a reliable clamping and centering of the fastening device in the rail. If in each case both spring tabs of a spring arrangement are prestressed, a higher clamping force is additionally provided by which a better clamping and / or centering in the longitudinal slot of the profile rail can take place.

The spring tabs of a spring arrangement preferably extend towards each other, so that regardless of the direction of rotation of the fastening device in each case a spring tab of a spring arrangement rests on the edge of the longitudinal slot and holds the fastening device and / or centered. In the preassembly position in which the threaded plate engages behind the slot flanks, for example, in each case both spring tabs of a spring arrangement are biased, so that a high clamping force can be provided.

Due to the shape of the spring tabs of a spring arrangement or their arrangement relative to one another, a rest position of the fastening device can be defined on the rail, which corresponds to the preassembly, so that the fastening device can not accidentally get back into the intermediate mounting position. The free ends of the spring tabs of a spring arrangement may, for example, be arranged spaced from each other in the circumferential direction, wherein the rest position is reached when in each case bear both free ends of the spring tabs of a spring arrangement at one edge of the longitudinal slot.

The spring tabs of a spring arrangement can also overlap in the radial direction. In the circumferential direction, therefore, no area without spring tab is present between the spring tabs. This has the advantage that always at least one spring tab rests against the edge of the longitudinal slot. In addition, the radially inner spring tab can support the overlapping radially outer spring tab, so that a higher spring force can be provided. The overlapping spring tabs can rest against each other in the unloaded state or be spaced from each other and only come into contact with each other when acting on the radially outer spring tab force.

The radially inner spring tab may have a radially inwardly bent free end. The spring elements, for example, have substantially the same curvature and the outer end of the radially inner spring tab is bent so that it protrudes in the radial direction below the radially outer tab.

The spring tabs of a spring arrangement may also have different curvatures. Due to the different curvature, for example, the overlap of the spring tabs of a spring arrangement can be made easier. In addition, different spring forces of the two spring tabs of the spring arrangements can be provided by different curvatures. As a result, for example, a preferred direction of rotation of the fastening device can be specified. The spring force of the front in the preferred direction of rotation spring tab may for example be lower, whereby the resistance during rotation of the fastening device in this direction is lower or the spring force of the rear in the direction of rotation spring tab may be higher, so that in the opposite direction of rotation, a higher resistance when turning the fastening device is present. This allows an operator to easily recognize the preferred direction of rotation during assembly.

At least one spring tab, a rotation stop is provided which prevents over-rotation of the fastening device in the rail.

Furthermore, the holding device can have a circumferential, in particular circumferential, frame in the circumferential direction, on which the spring tabs are arranged, whereby the weight of the fastening device can be reduced. Within this framework may further be provided a channel for a threaded rod or a screw.

Optionally, a threaded rod or a screw may be provided with an external thread corresponding to the internal thread of the threaded plate, which is screwed into the internal thread of the threaded plate and which projects beyond the cover plate on the side of the cover plate opposite the threaded plate. The threaded rod can be supported on the cover plate or an attachment with a head or a screwed nut. By screwing the threaded rod into the internal thread of the threaded plate, the threaded plate is pulled against the cover plate or made possible by unscrewing from the threaded plate movement away from the cover plate.

It can also be said that can be formed by the inventive arrangement of opposing spring tabs embodiments of the holding device in the first place as a plastic part with functionally reliable radial clamping. The holding device can be made in one piece, for example, with the spring tabs made of plastic.

To achieve the object, a fastening assembly is further provided with a fastening device described above and with a rail, which has a substantially C-shaped cross-section and a longitudinal slot, wherein the length of the threaded plate is greater than the width of the longitudinal slot and the width of the threaded plate smaller than the width of the longitudinal slot. The fastening device is in a first orientation, in which the longitudinal direction of the threaded plate corresponds to the longitudinal direction of the longitudinal slot, with the holding device in an insertion direction into an intermediate mounting position, the longitudinal slot can be inserted, in which the cover plate rests on the rail. Furthermore, the fastening device is rotatable from the intermediate mounting position in the rotational direction into a preassembly position, in which the threaded plate engages behind the edges of the longitudinal slot, and in which at least one spring tab of each spring arrangement rests against the slot flanks of the longitudinal slot.

In order to avoid over-rotation of the fastening device beyond the preassembly position, at least one rotation stop can be provided on the cover plate and / or on the holding device, which rests against the profile rail in the preassembly position and prevents rotation in the assembly direction beyond the preassembly position.

• 1 Eine Explosionsansicht einer ersten Ausführungsform einer erfindungsgemäßen Befestigungsbaugruppe;
• 2a eine perspektivische Ansicht der Befestigungsbaugruppe aus 1;
• 2b eine Schnittansicht durch die Befestigungsbaugruppe aus 2a
• 2c eine Draufsicht auf die Befestigungsbaugruppe aus 2a;
• 3a eine erste perspektivische Ansicht der Befestigungsvorrichtung der Befestigungsbaugruppe aus 2a;
• 3b eine zweite perspektivische Ansicht der Befestigungsvorrichtung der Befestigungsbaugruppe aus 2a;
• 4a eine Schnittansicht durch die Befestigungsvorrichtung aus Fig. 3a und 3b;
• 4b eine Draufsicht auf die Befestigungsvorrichtung aus Fig. 3a und 3b;
• 4c eine zweite Schnittansicht durch die Befestigungsvorrichtung aus Fig. 3a und 3b;
• 4d eine Ansicht der Unterseite der Befestigungsvorrichtung aus Fig. 3a und 3b;
• 5a eine erste perspektivische Ansicht der Montage einer Gewindeplatte in der Befestigungsvorrichtung aus Fig. 3a und 3b;
• 5b eine zweite perspektivische Ansicht der Montage einer Gewindeplatte in der Befestigungsvorrichtung aus Fig. 3a und 3b;
• 6a eine erste perspektivische Ansicht der Befestigungsvorrichtung aus Fig. 3a und 3b mit einer Gewindeplatte;
• 6b eine zweite perspektivische Ansicht der Befestigungsvorrichtung aus Fig. 3a und 3b mit einer Gewindeplatte;
• 7a eine Draufsicht auf die Befestigungsvorrichtung aus Fig. 6a und 6b;
• 7b eine Schnittansicht durch die Befestigungsvorrichtung aus Fig. 6a und 6b;
• 8 eine Draufsicht auf eine Befestigungsbaugruppe mit der Befestigungsvorrichtung aus Fig. 6a und 6b;
• 9 Eine Explosionsansicht einer ersten Ausführungsform einer erfindungsgemäßen Befestigungsbaugruppe;
• 10a eine perspektivische Ansicht der Befestigungsbaugruppe aus 9;
• 10b eine Schnittansicht durch die Befestigungsbaugruppe aus 10a
• 10c eine Draufsicht auf die Befestigungsbaugruppe aus 10a;
• 11a eine erste perspektivische Ansicht des Halteelements der Befestigungsvorrichtung der Befestigungsbaugruppe aus 10a;
• 11b eine zweite perspektivische Ansicht des Halteelements aus 11a;
• 12a eine Schnittansicht durch das Haltelement aus Fig. 11a und 11b;
• 12b eine zweite Schnittansicht durch das Haltelement aus Fig. 11a und 11b;
• 12c eine Draufsicht auf das Haltelement aus Fig. 11a und 11b;
• 13a eine erste Explosionsansicht der Befestigungsvorrichtung der Befestigungsbaugruppe aus 10a;
• 13b eine zweite Explosionsansicht der Befestigungsvorrichtung der Befestigungsbaugruppe aus 10a;
• 14a eine erste perspektivische Ansicht der Befestigungsvorrichtung aus Fig.13a und 13b;
• 14b eine zweite perspektivische Ansicht der Befestigungsvorrichtung aus Fig. 13a und 13b;
• 15a eine Draufsicht auf die Befestigungsvorrichtung aus Fig. 14a und 14b; und
• 15b eine Schnittansicht durch die Befestigungsvorrichtung aus Fig. 14a und 14b.

Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

• 1 An exploded view of a first embodiment of a fastening assembly according to the invention;
• 2a a perspective view of the mounting assembly 1 ;
• 2 B a sectional view through the mounting assembly 2a
• 2c a plan view of the mounting assembly 2a ;
• 3a a first perspective view of the fastening device of the fastening assembly from 2a ;
• 3b a second perspective view of the fastening device of the mounting assembly from 2a ;
• 4a a sectional view through the fastening device of Fig. 3a and 3b ;
• 4b a plan view of the fastening device of Fig. 3a and 3b ;
• 4c a second sectional view through the fastening device of Fig. 3a and 3b ;
• 4d a view of the underside of the fastening device of Fig. 3a and 3b ;
• 5a a first perspective view of the mounting of a threaded plate in the fastening device of Fig. 3a and 3b ;
• 5b a second perspective view of the mounting of a threaded plate in the fastening device of Fig. 3a and 3b ;
• 6a a first perspective view of the fastening device of Fig. 3a and 3b with a threaded plate;
• 6b a second perspective view of the fastening device of Fig. 3a and 3b with a threaded plate;
• 7a a plan view of the fastening device of Fig. 6a and 6b ;
• 7b a sectional view through the fastening device of Fig. 6a and 6b ;
• 8th a plan view of a mounting assembly with the fastening device of Fig. 6a and 6b ;
• 9 An exploded view of a first embodiment of a fastening assembly according to the invention;
• 10a a perspective view of the mounting assembly 9 ;
• 10b a sectional view through the mounting assembly 10a
• 10c a plan view of the mounting assembly 10a ;
• 11a a first perspective view of the retaining element of the fastening device of the fastening assembly from 10a ;
• 11b a second perspective view of the retaining element 11a ;
• 12a a sectional view through the retaining element of Fig. 11a and 11b ;
• 12b a second sectional view through the retaining element of Fig. 11a and 11b ;
• 12c a plan view of the retaining element of Fig. 11a and 11b ;
• 13a a first exploded view of the fastening device of the fastening assembly from 10a ;
• 13b a second exploded view of the fastening device of the fastening assembly 10a ;
• 14a a first perspective view of the fastening device of Fig.13a and 13b ;
• 14b a second perspective view of the fastening device of Fig. 13a and 13b ;
• 15a a plan view of the fastening device of Fig. 14a and 14b ; and
• 15b a sectional view through the fastening device of Fig. 14a and 14b ,

The 1 . 2a to 3c and Figure 8 shows a mounting assembly 10 for fastening a load, for example an attachment 12 , The attachment 12 Here is an angle plate with two legs perpendicular to each other 14 each with a hole 16 , The attachment 12 may also have a different shape. Furthermore, the angle plate can only be an adapter to a load on the rail 18 to fix.

The in the 3a to 7b shown mounting assembly 10 has a profile rail 18 and a fastening device 20 on. The profile rail 18 has a substantially C-shaped cross-section and has a longitudinal slot 22 on, of two substantially parallel slot flanks 24 is limited. Behind the slot flanks 24 is a recording room 26 intended.

The in the 2 to 8th shown fastening device 20 has a cover plate 28 , a holding device 30 for a threaded plate 32 , a threaded plate 32 as well as a threaded rod 34 on.

With the fastening device 20 can the threaded plate 32 in the longitudinal slot 22 introduced and rotated in this about a rotation axis D in a pre-assembly in which the threaded plate 32 the slot flanks 24 engages behind. Subsequently, the threaded plate 32 through the threaded rod 34 against the attachment 12 be pulled into a final assembly position, in which the slot flanks 24 between the attachment 12 and the threaded plate 32 are clamped, causing the attachment 12 on the profile rail 18 is fixed.

The cover plate 28 is substantially rectangular (alternatively polygon, oval or star-shaped) and has a base plate 36 on, consisting of two parallel bars 38 is formed, as well as two side plates 40 at opposite edges of the base plate 36 around a nominal deformation point 41 are pivotally mounted. For example, the desired deformation point 41 between the base plate 36 and the side plates 40 each formed by a film hinge. The cover plate 28 also has an opening 42 for the threaded rod 34 on.

The holding device 30 extends in a plug-in direction e essentially perpendicular to the cover plate 28 away and has a substantially parallel to the plane of the cover plate 28 extending recording 44 for the threaded plate 32 on, in which the threaded plate 32 essentially parallel to the cover plate 28 can be held. The recording 44 extends through the holding device 30 through, leaving the threaded plate 32 in a direction transverse to the insertion e extending insertion direction S in the recording 44 can be inserted.

Through the cover plate 28 as well as the holding device 30 extends in the insertion direction e extending passage opening 46 for the threaded rod 34 ,

The recording 44 is on one of the cover plate 28 facing top 48 and on a side facing away from the top side 50 each from a frame 52 . 54 limited. The height of the recording 44 essentially corresponds to the height of the threaded plate 32 , leaving an inserted threaded plate 32 in the insertion direction e has no or only a small game. The frames 52 . 54 are by two with respect to the passage opening 46 diametrically opposed webs 55 connected, which is the lateral boundary of the recording 44 form.

As in the 3a . 3b and 4d you can see on the upper frame 52 furthermore, on the outside, two spring arrangements 56 provided, which are arranged diametrically opposite with respect to the axis of rotation D and two each with respect to the rotational axis D 46 radially resilient spring shackles 58 . 59 exhibit. The spring tabs 58 . 59 each extend radially outward with respect to the axis of rotation D and are curved in the circumferential direction with respect to the axis of rotation D. Furthermore, the spring tabs extend 58 . 59 a spring arrangement 56 with respect to a circumferential direction about the holding device 30 or about the axis of rotation D in opposite directions and towards each other.

As in particular in 4d can be seen, overlap the spring tabs 58 . 59 a spring arrangement 56 each in the radial direction with respect to the axis of rotation D and have different curvatures.

At the bottom frame 54 is further arranged concentric with the axis of rotation D and in the recording 44 protruding holding device 60 for the threaded plate 32 intended. As in the 4a and 4c can be seen, is the holding device 60 with a first end 74 at the frame 54 and thus on the holding device 30 attached and extends with a second, free end in the manner of a spike 76 opposite to the insertion direction e in the recording 44 ,

The holding device 60 extends into a hole 68 the threaded plate 32 and thus fixes the threaded plate 32 in the recording 44 , As in 7b can be seen, stands the free end 76 into the hole 68 and abuts the bore diameter so that the threaded plate 32 is held backlash, with the bore 68 is centered to the rotation axis D.

As in 7b furthermore, the perimeter diameter of the retainer 60 decreases from the free end 76 away too, so that the holding device 60 tapered towards its free end, causing the holding device 60 when drilling 68 with different diameters different far into the hole 68 extend and can rest respectively at the bottom of the hole.

As in particular in the 3b and 4d can be seen, the holding device has 60 two, in the circumferential direction with respect to the passage opening 46 evenly distributed holding elements 62 on. Each of the retaining elements 62 is each over a spring tab 64 springy with the frame 54 connected. Strictly speaking, the retaining elements spring 62 essentially around a circular path, whose center in each case the connection point of the spring tabs on the holding device 30 is. The distance between the outer wall of the holding elements 62 from the rotation axis D takes in the insertion direction e to. The envelope of the holding elements 62 has a substantially cone-shaped surface.

Furthermore, the holding device 60 one in the insertion direction e extending, concentric with the passage opening 46 arranged opening 66 on. Because the retaining elements 62 are resiliently mounted, they can also in the radial direction with respect to the passage opening 46 give way resiliently, leaving the opening 66 perpendicular to the insertion direction e , ie with respect to the passage opening 46 in the radial direction, is elastically expandable.

As in the 3a and 3b can be seen, is the holding device 30 over spring elements formed as spring elements 47 with the cover plate 28 connected, so that the holding device 30 in the insertion direction e springy with the cover plate 28 is coupled. The spring tabs extend arcuately between the cover plate 28 and the holding device 30 , wherein one on the holding device 30 provided portion substantially in the insertion direction e runs and one on the cover plate 28 provided portion substantially in the plane of the cover plate 28 runs. By the spring elements 47 is the threaded plate 32 in the insertion direction e relative to the cover plate 28 elastically displaceable.

The threaded rod 34 has an internal thread of the threaded plate 32 corresponding external thread, with which the screw rod formed as a screw 34 into the bore of the threaded plate 32 extends. The threaded rod 34 further supports with a head 35 on the attachment 12 from.

For attachment of the attachment 12 on the profile rail 18 First, a threaded plate 32 in the insertion direction S in the recording 44 pushed ( 5a and 5b ). The threaded plate 32 is formed substantially rectangular, wherein the width of the threaded plate 32 smaller than the distance between the two slot flanks 24 and the length of the threaded plate 32 is greater than the distance between the two slot edges 24 and substantially the width of the receiving space 26 corresponds. The threaded plate 32 also has a hole 68 with an internal thread.

The holding elements 62 can in the insertion direction e give way so far resilient, so that this is the insertion of the threaded plate 32 not or only slightly hinder. In particular, these can be completely absorbed 44 pop out. Once the threaded plate 32 so far in the recording 44 is inserted that the bore 68 concentric with the passage opening 46 is located, the retaining elements spring 62 into the hole 68 , The holding elements 62 spring so far into the hole 68 a, until the radial outside of the holding elements 62 each at the bottom of the bore diameter of the bore 68 is present ( 6a and 6b ). Since the cross section of the holding device 62 at the first end 74 greater than the bore diameter of the hole 68 and the cross section of the holding device 60 at the second end 76 smaller than the diameter of the hole 68 , is the threaded plate 32 in the recording 44 centered so that the bore 68 concentric with the passage opening 46 is arranged.

The threaded rod 34 can subsequently through the passage opening 46 into the hole 68 the threaded plate 32 be introduced. The threaded rod 34 can be before or after the insertion of the fastening device 20 into the profile rail 18 be inserted.

Because the retaining elements 62 spring-mounted, the threaded rod can 34 the free end 76 or the holding elements 62 out of the hole 68 crowd out. In particular, the threaded rod can 34 between the out of the hole 68 pushed out retaining elements 62 through the opening 66 extend. Will the threaded rod 34 out of the hole 68 turned out, the holding elements 62 back into the hole 68 Press in and hold the threaded plate 32.

After inserting the threaded plate 32 in the recording 44 becomes the fastening device 20 with the threaded plate 32 aligned so that the longitudinal direction of the threaded plate 32 essentially the longitudinal direction L of the longitudinal slot 22 equivalent. The fastening device 20 gets so far in the insertion direction e in the longitudinal slot 22 inserted into an intermediate mounting position until the cover plate 28 on the slot flanks 24 rests and the threaded plate 32 in the insertion direction e located behind the slot flanks. The width of the holding device 30 as well as the width of the threaded plate 32 are smaller than the width of the longitudinal slot 22, so that the holding device 30 with the threaded plate 32 in the longitudinal slot 22 can be inserted.

Subsequently, the fastening device 20 rotated in the direction of rotation D in a pre-assembly in which the threaded plate 32 the slot flanks 24 engages behind. Preferably, the fastening device 20 rotated by about 90 °. As in 8th can be seen, run the Sollverformungsstellen 41 between the base plate 38 and the side plates 40 in this position in the longitudinal direction L , where the desired deformation points 41 in the insertion direction e above the longitudinal slot 22 are located.

In this pre-assembly and in the intermediate mounting position described above are the spring arrangements 56 on the mutually facing edges of the slot flanks 24 and center the fastening device 20 in the longitudinal slot 22 and keep these backlash free, leaving the fastening device 20 not from the longitudinal slot 22 can fall. Because the spring arrangements 56 two spring tabs each 58 . 59 have, is the fastening device 20 reliable, even with a rotation counter to the direction of rotation D, in the longitudinal slot 22 centered and held by clamping.

On the cover plate 28 , the holding device 30 and / or on the threaded plate 32 may be provided stops, which rotate the fastening device 20 in direction of rotation D beyond the pre-assembly position. For example, the stops on the spring tabs 58 . 59 intended.

Finally, the threaded plate 32 through the threaded rod 34 contrary to the insertion direction e against the attachment 12 pulled to the slot flanks 24 between the attachment 12 and the threaded plate 32 to jam. As the holding device 30 springy with the cover plate 28 connected, the cover plate can 28 and the holding device 30 be moved towards each other.

The cover plate 28 it is from the attachment 12 in the longitudinal slot 22 crowded, with the side plates 40 through the slot flanks 24 around the nominal deformation points 41 be folded over so that the cover plate 28 in the longitudinal slot 22 can dive. The side plates 40 while sliding on the slot flanks 24 that go up, so on the recording room 26 facing away, have rounded edges.

In the final assembly position is the cover plate 28 in the longitudinal slot 22 immersed and the attachment 12 lies directly on the slot flanks 24 the profile rail 18 on. The slot flanks 24 So are directly between the threaded plate 32 and the attachment 12 clamped. The cover plate 28 is not in the power flow between the threaded plate 32 or the attachment 12 and the profile rail 18 ,

For example, there is the fastening device 20 made of plastic and the threaded plate 32 as well as the profile rail 18 are made of metal. When using the fastening device described above 20 is located after tensioning the threaded plate 32 against the slot flanks 24 or against the load in the final mounting position under load thus no plastic in the power flow, whereby the reliability of the connection of the fixture 12 to the rail 18 can be increased.

Through the holding and centering device 60 becomes the threaded plate 32 fixed in the holding device 30, so that they are not during assembly from the recording 44 can fall. Because the retaining elements 62 are resilient, they can also different thicknesses of the threaded plate 32 compensate. In particular, the height of the recording 44 in the insertion direction e also be bigger than that Thickness of the threaded plate 32 , wherein the holding device 60 the threaded plate 32 Fedebeaufschlagt against the top or the bottom of the recording 44 urges.

A second embodiment of a fastening assembly 10 or a fastening device 20 is in the 9 to 15b shown.

The basic structure and the operation correspond to the fastening assembly described above 10 ,

Unlike the embodiment described above, but the cover plate 28 not deformable between a pre-assembly position and a final assembly position. The cover plate 28 is rigid and can not between the slot flanks 24 plunge.

Furthermore, the spring elements 47 not rigid on the cover plate 28 attached, but slidably mounted on this. As in particular in the 13a and 13b can be seen, shows the cover plate 28 two with respect to the passage opening 46 diametrically opposed recordings 70 on, each one through the cover plate 28 extending recess are formed.

The spring elements 47 are arcuate and extend parallel to the plane of the cover plate with a 28 extending section in the shots 70 and are slidably mounted in these. As in particular in 13b can be seen, have the spring elements 47 one locking element each 72 on, on the edge of the lead 70 latched and thus prevents the spring elements 47 from the recordings 70 can slip out.

The maximum distance of the holding device 30 from the cover plate 28 is due to the position of the locking elements 72 established. The holding device 30 can be so far from the cover plate 28 be moved away in the insertion direction until the locking elements 72 on the edge of the lead 70 issue. Preferably, the spring elements 47 designed so that the holding device 30 from the cover plate 28 away, so the locking elements 72 against the edge of the lead 70 to be urged.

Contrary to the insertion, the holding device 30 on the cover plate 28 to be moved, wherein the spring elements 47 can yield and the spring elements 47 dive into the receptacles 70, so relative to the cover plate 28 can be moved.

The holding device is thus constructed in several parts, namely a cover plate 28 a separate holding device 30 and a threaded plate 32 and a threaded rod 34 , The cover plate 28 and the holding device 30 For example, they can be made of different materials. For example, the cover plate 28 be made of a relatively stiff or pressure-stable material. The holding device 30 on the other hand, it has to absorb only small forces, so that it can be made of a relatively light and flexible material. In particular, the cover plate 28 and the holding device 30 but also made of the same material. The separate production of the cover plate 28 and the holding device 30 offers advantages, as they are easier to produce, for example in an injection molding process.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways.

All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

10

mounting assembly

12

attachment

14

Leg of the attachment

16

Drilling the attachment

18

rail

20

fastening device

22

longitudinal slot

24

slot flanks

26

accommodation space

28

cover plate

30

holder

32

threaded plate

34

threaded rod

35

Head of the threaded rod

36

baseplate

38

Stege

40

side plates

41

Intended deformation point

42

Opening in cover plate

44

admission

46

Through opening

47

spring element

48

Top of the recording

50

Bottom of the recording

52

frame

54

frame

55

web

56

spring assembly

58

spring shackle

59

spring shackle

60

holder

62

Holding and centering element

64

spring shackle

66

opening

68

drilling

70

admission

72

locking element

74

first end of the holding device

76

free end of the holding device / mandrel

e

insertion

L

longitudinal direction

S

insertion direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1902222 B1 [0002]
• DE 102007014795 A1 [0002]
• EP 1775482 B1 [0005]

Claims (11)

Fastening device (20) for clamping in a profiled rail (18) by screwing about an axis of rotation (D), which has a substantially C-shaped cross section and a longitudinal slot (22) with opposite slot flanks (24), wherein the fastening device comprises a cover plate (28 ) to rest on the rail (18), a threaded plate (32) having a threaded bore (68) and a length greater than the width of the longitudinal slot (22) and a width smaller than the width of the longitudinal slot (22) has, and a holding device (30) arranged on the cover plate (30) for the threaded plate (32) for insertion into the profiled rail (18), wherein between the cover plate (28) and the threaded plate (32) with respect to the axis of rotation (D) diametrically opposite spring arrangements (56) are provided for engagement with the slot flanks (24) of the longitudinal slot (22), characterized in that the spring assemblies (56) each two of the Haltevorric (30) with respect to the axis of rotation (D) radially outwardly extending, curved spring tabs (58, 59), each extending in a circumferential direction about the holding device (30) in opposite directions. Fastening device according to Claim 1 , characterized in that the spring tabs (58, 59) of a spring arrangement (56) each extend towards each other. Fastening device according to one of Claims 1 and 2 , characterized in that the spring tabs (58, 59) of a spring arrangement (56) overlap with respect to the axis of rotation (D) radial direction. Fastening device according to Claim 3 , characterized in that the radially inner spring tab (58) has a radially inwardly bent free end. Fastening device according to one of the preceding claims, characterized in that the spring tabs (58, 59) of a spring arrangement (56) have different curvatures. Fastening device according to one of the preceding claims, characterized in that on at least one spring tab (58, 59), a rotation stop is provided, which prevents over-rotation of the fastening device (20) in the rail (18). Fastening device according to one of the preceding claims, characterized in that the holding device (30) has a circumferential, in particular circumferential, annular frame (52) on which the spring tabs (58, 59) are arranged. Fastening device according to one of the preceding claims, characterized in that a threaded rod (34) or a screw with an internal thread of the threaded plate (32) corresponding external thread is provided, which is screwed into the internal thread of the threaded plate (32) and over the threaded plate opposite side of the cover plate (28) protrudes. Fastening device according to one of the preceding claims, characterized in that the holding device (30) with the spring tabs (58, 59) is made in one piece from plastic. A fastener assembly comprising a fastener as claimed in any one of the preceding claims and having a profile rail (18) having a substantially C-shaped cross-section and a longitudinal slot (22) with opposed slot flanks (24), the length of the threaded plate being greater than the width of the fastener Longitudinal slot (22) and the width of the threaded plate (32) is smaller than the width of the longitudinal slot (22), wherein the fastening device (20) in a first orientation, in which the longitudinal direction of the threaded plate corresponds to the longitudinal direction of the longitudinal slot, with the holding device (30) in an intermediate mounting position in the longitudinal slot (22) is inserted, in which the cover plate (28) on the Profile rail (18) rests, wherein the fastening device (20) is rotatable from the intermediate mounting position about the axis of rotation (D) into a preassembly position, in which the threaded plate (32) engages behind the edges (24) of the longitudinal slot (22) and in which at least one spring tab (58, 59). each spring assembly (56) rests against the slot flanks of the longitudinal slot. Mounting assembly after Claim 10 , characterized in that on the cover plate (28) and / or on the holding device (30) at least one rotation stop is provided, which rests in the pre-assembly position on the rail (18) and prevents rotation in the mounting direction beyond the preassembly.

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